| CPC H04W 12/06 (2013.01) [H04L 61/50 (2022.05); H04L 63/083 (2013.01); H04L 63/102 (2013.01); H04W 40/02 (2013.01); H04L 61/2503 (2013.01); H04W 72/0453 (2013.01); H04W 88/16 (2013.01)] |

| AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT: |
| The patentability of claims 1-19 is confirmed. |
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1. A method of operating a single network adapter, comprising a single network interface card or module, to communicate wirelessly with a first sub-network and a second sub-network, the method comprising:
setting up a first network address and routing table in the network interface card or module for use in the first sub-network;
setting up a second network address and routing table in the network interface card or module for use in the second sub-network;
using said single network interface card or module to receive data for one of the first and second sub-networks, and to re-transmit the data to the other of the first and second sub-network, using the network addresses and routing tables,
wherein the first sub-network includes a network gateway and the network adapter is configured to control access from the second sub-network to the network gateway, and
wherein the step of receiving data comprises receiving a request from a user via the second sub-network to access the gateway on the first sub-network, verifying the user's access rights, and allowing the user to access the gateway if and only if the user is entitled to access the gateway.
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